PHYSICS MIDDLE SCHOOL

Glassy and metallic are terms that describe what mineral property? A.luster B.color C.shape D.hardness

Answers

Answer 1
Answer: The answer is A.luster
Answer 2
Answer:

The correct answer is option A. Luster

Hope this helps! :)

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Which body system processes into a useable source of energy

Answers

possibly limpathic or respiratory system

A concave mirror can produce _____.either a virtual image or a real image

a real image

a virtual image

a refracted image

Answers

Answer:

a virtual image

Explanation:

gradpoint

When you measure the boiling point of mercury, you are investigating a ___. a.chemical change b.chemical property c.physical change d.physical property

Answers

d. physical property

the bonds between molecules of mercury are breaking so it's physical and it's not changing the chemical composition of the substance

A baseball falling toward a player's glove gains _____ energy and loses _____ energy. A. potential; kinetic B. kinetic; potential C. kinetic; chemical D. chemical; potential

Answers

Answer:

I think it's B it can not be C or D because it has nothing to do with chemical energy

Answer:

Your answer is B

Explanation:

When a ball falls it is gaining kinetic energy because it gains speed as it falls.Since its gaining kinetic energy it loses potential energy so ur answer is B :) hope it helps

A ball rolls with a speed of 4.0 m/s across a level table that is 1.0 m above the floor. Upon reaching the edge of the table, itfollows a parabolic path to the floor. How many meters along the floor is the landing spot from the table?

Answers

Answer: 1.81m

Explanation:

Given the following:

Horizontal speed = 4m/s

Height of table = 1m

Taking the vertical component of the motion:

Using:

S = ut + 0.5 at^2

Where, S = height of table, a = acceleration due to gravity (9.8m/s^2), t = time and u = Initial Velocity in vertical direction = 0

1 = 0(t) + 0.5(9.8)t^2

1 = 4.9t^2

t^2 = 1 / 4.9

t^2 = 0.204081

t = sqrt(0.204081)

t = 0.452s

For Horizontal :

Gravitational acceleration is absent, therefore distance can be calculated using:

Distance = Velocity × time

Distance = 4m/s × 0.452s

Distance = 1.808 m

Distance = 1.81m

Janine's party, the orchestra has 10 guitar players and 8 flute playersAt Brown's party, the orchestra has 12 guitar players and 7 flute players.Which party has a higher ratio of guitar to flute players?

Answers

Brown's Party because 10-8=2 and 12-7=5 5≥2
compare J 10:8=5:4 and B 12:7
common denominator
J 5:4=35:28 and B 12:7 =48:28
B wins
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